GSM Retronetworking¶

This project is devoted to treating GSM (aka 2G) cellular telephony as a subject of retronetworking, in contrast to whatever few commercial applications may still exist for this technology. The following topics are welcome under the umbrella of this project:

• Old GSM network infrastructure components, particularly TDM-based ones: historical MSCs, historical BSCs, historical TRAUs;
• Lore about various extant commercial GSM networks around the world, various quirks that can be explored and documented;
• Efforts to build and deploy new GSM networks for the sole purpose of providing service to vintage mobile phones;
• Old GSM phones, chipsets and development boards, from a lorekeeping perspective;
• Emphasis on non-AMR speech codecs, as needed in networks that primarily serve old phones.

Pages¶

Auto-generated list of sub-pages:

• E1 BTS
  • BFI criteria
  • DTXu half-blocks
  • HRv1 UL Rx
  • InSite UL captures
  • No-data output
• HRv1 error flags
• TFO
  • UL-to-DL transform
• ThemWi RTP Extensions
• TRAU
  • Nokia TCSM2
    • TCSM2 ET modules
    • TCSM2 ET1TC chassis
    • TCSM2 firmware
    • TCSM2 interchassis cable
    • TCSM2 PCM circuit types
    • TCSM2 power supply
    • TCSM2 TC1C chassis
    • TCSM2 timing
    • TCSM2 transcoder cards
    • TCSM2 TRCO card